However, following a 5-0 defeat away to Celtic in his second game in charge, Paatelainen promoted 22-year-old Michal Szromnik from the bench for Saturday's 1-0 win over Ross County, a match Kawashima attended.

"Michal played really well against Ross County, kept a clean sheet," said Paatelainen. "Luis before that did really well.

"So we have, hopefully in the future, three quality goalkeepers fighting for a place."

Kawashima played for Omiya Ardija and Nagoya Grampus Eight in his homeland before, in 2007, being transferred to Kawasaki Frontale for 150 million yen, which was a J-League record at the time.

A move to Lierse in the Belgian top flight followed in 2010 and, two years later, Kawashima switched to Pro League rivals Liege.

Paatelainen revealed the opportunity to sign the Japan stopper came about "just through my contacts".

"It's not everyday that that calibre of player is out of contract at this time of year but, luckily for us, that's the situation," added the Finn.